4647722881 has 2 divisors, whose sum is σ = 4647722882. Its totient is φ = 4647722880.

The previous prime is 4647722873. The next prime is 4647722923. The reversal of 4647722881 is 1882277464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4645649281 + 2073600 = 68159^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 4647722881 - 2³ = 4647722873 is a prime.

It is a super-2 number, since 2×4647722881² = 43202655957141880322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4647722851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2323861440 + 2323861441.

It is an arithmetic number, because the mean of its divisors is an integer number (2323861441).

Almost surely, 2^4647722881 is an apocalyptic number.

It is an amenable number.

4647722881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4647722881 is an equidigital number, since it uses as much as digits as its factorization.

4647722881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 49.

The square root of 4647722881 is about 68174.2097937336. The cubic root of 4647722881 is about 1668.8350345162.

The spelling of 4647722881 in words is "four billion, six hundred forty-seven million, seven hundred twenty-two thousand, eight hundred eighty-one".